Finding the Fourth Proportional to 2,144.13, 3,213.82 and 1,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.13 : 3,213.82 = 1,090.72 : x
2. Step 2: Convert to fraction form
   2,144.13/3,213.82 = 1,090.72/x
3. Step 3: Cross multiply
   2,144.13x = 3,213.82 × 1,090.72
4. Step 4: Simplify right side
   2,144.13x = 3,505,377.75
5. Step 5: Solve for x
   x = 3,505,377.75/2,144.13
6. Step 6: Final answer
   x = 1,634.87